Finding the Fourth Proportional to 18,121,463.30, 25,007,612.12 and 9,972,701.30
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Solution
The fourth proportional to 18,121,463.30, 25,007,612.12 and 9,972,701.30 is: 13,762,323.81
Step by Step Solution
- Step 1: Write the proportion equation
18,121,463.30 : 25,007,612.12 = 9,972,701.30 : x - Step 2: Convert to fraction form
18,121,463.30/25,007,612.12 = 9,972,701.30/x - Step 3: Cross multiply
18,121,463.30x = 25,007,612.12 × 9,972,701.30 - Step 4: Simplify right side
18,121,463.30x = 249,393,445,899,019.78 - Step 5: Solve for x
x = 249,393,445,899,019.78/18,121,463.30 - Step 6: Final answer
x = 13,762,323.81
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.